How do i place an image texture over multiple objects?
You can use the following node tree settings using &quot;Object&quot; output from &quot;Texture coordinates&quot; using another object (here an empty):

The empty will project along its Z axis.
On bottom line, the coordinates are shifted by 0.5 to center the image. The image is set to &quot;clip&quot;.
On top line, we only keep Z values we want (upon a small negative value if the empty is placed along the objects we're projecting on). This is multiplied by alpha to render as red alpha parts of the image.